CSS PortalCSS Portal
Menu
  • CSS Generators
  • CSS Resources
  • CSS Tools
  • HTML Resources
  • Blog
  1. Home
  2. CSS Properties
  3. Flex-basis

CSS flex-basis Property

Description

The flex-basis property determines the base of the flex , which is the initial size of the element. Similar to the width and height properties to which the contents of an element are added.

Initial value
auto
Applies to
Flex items, including in-flow pseudo-elements
Inherited
No
Media
Visual
Computed value
As specified, but with relative lengths converted into absolute lengths
Animatable
Yes
CSS Version
CSS3
JavaScript syntax
object.style.flexBasis

Syntax

flex-basis: auto | <size>

Values

  • autoIndicates auto size based on the content of the item.
  • <size>Specifies the size of the element in px, mm, pt or in percent along the main axis. In this case, the size is calculated relative to the parent. A negative value is not valid.

Example

<div class="flex-container"> 
<div class="flex-item one">First</div>
<div class="flex-item two">Second</div>
<div class="flex-item three">Third</div>
</div>
.flex-container { 
   display: flex;
   height: 300px;
   color: #fff;
   font-size: 2em;
   flex-flow: column wrap;
} 
.flex-item { 
   display: flex;
   align-items: center; 
   justify-content: center;
} 
.one { 
   background: #508694;
   margin-right: 10px;
   flex-basis: 100%; 
   order: 1;
} 
.two { 
   background: #BB844C;
   margin-bottom: 10px;
   flex: 1 1 0; 
   order: 2;
} 
.three { 
   background: #929D79; 
   flex: 1 1 0; 
   order: 3; 
}

Browser Support

Desktop
Explorer Edge Chrome Firefox Opera Safari
1112292212.19
Tablets / Mobile
Android Chrome Firefox Opera Safari Samsung
4.4292212.192.0

Last updated by CSSPortal on: 4th November 2019


Share this Page

If you have enjoyed using CSSPortal, please consider sharing this page with other users, just click on your preferred social media link or copy the webpage from the link below.

URL
Sidebar

CSS & HTML References

  • CSS At-Rules
    • @charset
    • @document
    • @font-face
    • @import
    • @keyframes
    • @media
    • @namespace
    • @page
    • @supports
    • @viewport
  • CSS Data Types
    • angle
    • basic-shape
    • blend-mode
    • color
    • frequency
    • gradient
    • image
    • integer
    • length
    • number
    • percentage
    • position
    • ratio
    • resolution
    • string
    • time
    • url
  • CSS Functions
    • attr
    • blur
    • brightness
    • calc
    • circle
    • contrast
    • drop-shadow
    • ellipse
    • grayscale
    • hsl
    • hsla
    • hue-rotate
    • inset
    • invert
    • linear-gradient
    • matrix
    • matrix3d
    • opacity
    • perspective
    • polygon
    • radial-gradient
    • repeating-linear-gradient
    • repeating-radial-gradient
    • rgb
    • rgba
    • rotate
    • rotate3d
    • rotateX
    • rotateY
    • rotateZ
    • saturate
    • scale
    • scale3d
    • scaleX
    • scaleY
    • scaleZ
    • sepia
    • skew
    • skewX
    • skewY
    • translate
    • translate3d
    • translateX
    • translateY
    • translateZ
  • CSS Properties
    • align-content
    • align-items
    • align-self
    • all
    • animation
    • animation-delay
    • animation-direction
    • animation-duration
    • animation-fill-mode
    • animation-iteration-count
    • animation-name
    • animation-play-state
    • animation-timing-function
    • backface-visibility
    • background
    • background-attachment
    • background-blend-mode
    • background-clip
    • background-color
    • background-image
    • background-origin
    • background-position
    • background-repeat
    • background-size
    • border
    • border-bottom
    • border-bottom-color
    • border-bottom-left-radius
    • border-bottom-right-radius
    • border-bottom-style
    • border-bottom-width
    • border-collapse
    • border-color
    • border-image
    • border-image-outset
    • border-image-repeat
    • border-image-slice
    • border-image-source
    • border-image-width
    • border-left
    • border-left-color
    • border-left-style
    • border-left-width
    • border-radius
    • border-right
    • border-right-color
    • border-right-style
    • border-right-width
    • border-spacing
    • border-style
    • border-top
    • border-top-color
    • border-top-left-radius
    • border-top-right-radius
    • border-top-style
    • border-top-width
    • border-width
    • bottom
    • box-decoration-break
    • box-shadow
    • box-sizing
    • break-after
    • break-before
    • break-inside
    • caption-side
    • caret-color
    • clear
    • clip-path
    • color
    • column-count
    • column-fill
    • column-rule
    • column-rule-color
    • column-rule-style
    • column-rule-width
    • column-span
    • column-width
    • columns
    • content
    • counter-increment
    • counter-reset
    • counter-set
    • cursor
    • direction
    • display
    • empty-cells
    • filter
    • flex
    • flex-basis
    • flex-direction
    • flex-flow
    • flex-grow
    • flex-shrink
    • flex-wrap
    • float
    • font
    • font-family
    • font-feature-settings
    • font-kerning
    • font-language-override
    • font-size
    • font-size-adjust
    • font-stretch
    • font-style
    • font-synthesis
    • font-variant
    • font-variant-alternates
    • font-variant-caps
    • font-variant-east-asian
    • font-variant-ligatures
    • font-variant-numeric
    • font-variant-position
    • font-weight
    • grid
    • grid-area
    • grid-auto-columns
    • grid-auto-flow
    • grid-auto-rows
    • grid-column
    • grid-column-end
    • grid-column-gap
    • grid-column-start
    • grid-gap
    • grid-row
    • grid-row-end
    • grid-row-gap
    • grid-row-start
    • grid-template
    • grid-template-areas
    • grid-template-columns
    • grid-template-rows
    • hanging-punctuation
    • height
    • hyphens
    • image-orientation
    • justify-content
    • justify-items
    • justify-self
    • left
    • letter-spacing
    • line-break
    • line-height
    • list-style
    • list-style-image
    • list-style-position
    • list-style-type
    • margin
    • margin-bottom
    • margin-left
    • margin-right
    • margin-top
    • max-height
    • max-width
    • min-height
    • min-width
    • mix-blend-mode
    • object-fit
    • object-position
    • opacity
    • order
    • orphans
    • outline
    • outline-color
    • outline-offset
    • outline-style
    • outline-width
    • overflow
    • overflow-wrap
    • overflow-x
    • overflow-y
    • padding
    • padding-bottom
    • padding-left
    • padding-right
    • padding-top
    • perspective
    • perspective-origin
    • place-content
    • place-items
    • place-self
    • position
    • quotes
    • resize
    • right
    • shape-image-threshold
    • shape-margin
    • shape-outside
    • tab-size
    • table-layout
    • text-align
    • text-align-last
    • text-combine-upright
    • text-decoration
    • text-decoration-color
    • text-decoration-line
    • text-decoration-style
    • text-emphasis
    • text-emphasis-color
    • text-emphasis-position
    • text-emphasis-style
    • text-indent
    • text-justify
    • text-orientation
    • text-overflow
    • text-shadow
    • text-transform
    • text-underline-position
    • top
    • transform
    • transform-origin
    • transform-style
    • transition
    • transition-delay
    • transition-duration
    • transition-property
    • transition-timing-function
    • unicode-bidi
    • vertical-align
    • visibility
    • white-space
    • widows
    • width
    • word-break
    • word-spacing
    • word-wrap
    • writing-mode
    • z-index
  • CSS Pseudo Classes
    • :active
    • :checked
    • :default
    • :disabled
    • :empty
    • :enabled
    • :first-child
    • :first-of-type
    • :focus
    • :fullscreen
    • :hover
    • :in-range
    • :indeterminate
    • :invalid
    • :lang
    • :last-child
    • :last-of-type
    • :link
    • :not
    • :nth-child
    • :nth-last-child
    • :nth-last-of-type
    • :nth-of-type
    • :only-child
    • :only-of-type
    • :optional
    • :out-of-range
    • :read-only
    • :read-write
    • :required
    • :root
    • :target
    • :valid
    • :visited
  • CSS Pseudo Elements
    • ::after
    • ::before
    • ::first-letter
    • ::first-line
    • ::placeholder
    • ::selection
  • HTML Tags
    • a
    • abbr
    • address
    • area
    • article
    • aside
    • audio
    • b
    • base
    • bdi
    • bdo
    • blockquote
    • body
    • br
    • button
    • canvas
    • caption
    • cite
    • code
    • col
    • colgroup
    • comment
    • datalist
    • dd
    • del
    • details
    • dfn
    • dialog
    • div
    • dl
    • doctype
    • dt
    • em
    • embed
    • fieldset
    • figcaption
    • figure
    • footer
    • form
    • h1
    • h2
    • h3
    • h4
    • h5
    • h6
    • head
    • header
    • hr
    • html
    • i
    • iframe
    • img
    • input
    • ins
    • kbd
    • keygen
    • label
    • legend
    • li
    • link
    • map
    • mark
    • menu
    • meta
    • meter
    • nav
    • noscript
    • object
    • ol
    • optgroup
    • option
    • output
    • p
    • param
    • picture
    • pre
    • progress
    • q
    • rp
    • rt
    • ruby
    • s
    • samp
    • script
    • section
    • select
    • small
    • source
    • span
    • strong
    • style
    • sub
    • summary
    • sup
    • table
    • tbody
    • td
    • textarea
    • tfoot
    • th
    • thead
    • time
    • title
    • tr
    • track
    • u
    • ul
    • var
    • video
    • wbr
  • Sponsors
  • Turn Website into App
    Convert your website into an app for Android and iOS. Updates automatically.
    Unicode Characters & Emojis
    Search all Unicode characters and emojis plus other tools.
    Learn Wordpress
    Wordpress hosting. Theme and plugin reviews. Wordpress development tips.
    Templatic
    Wordpress Themes, Cloud Hosting, Backups and Webmaster Tips.
    A2 Web Hosting
    Shared hosting, Reseller hosting, Cloud hosting, Dedicated hosting.
    Online Password Manager
    Access your passwords from any computer, no need to remember all of your passwords.
    Advertise Here
    Advertise your company and products here!

    About CSSPortal

    CSS Portal is home to many examples of CSS and how it can be used in website design. Here you'll find all CSS properties and many CSS generators to help with all your design needs.

    Friends

    • Expand URL
    • Password Manager
    • Website Tools & Generators

    CSSPortal

    • Donate to CSSPortal
    • Privacy Policy
    • Contact Us
    • CSS Blog

    Copyright © 2023, CSSPortal.com All rights reserved.